The growing puppie’s brain needs DHA, derived from Omega 6 and Omega 3 fatty acids. Many brands will focus only on Omega 3 fatty acids, but a puppy’s developing brain requires Omega 6 fatty acids as well as Omega 3. Sources of DHA include chicken fat, anchovy and sardine meals, flaxseed, menhaden fish oil, hemp seed oil, and dehydrated kelp and egg. The eye contains a high concentration of DHA, formed from fats in the diet. The more nutritious the fat, the better the eye can function.